On 26.02.24 13:03, Ryan Roberts wrote:
The contpte symbols must be exported since some of the public inline
ptep_* APIs are called from modules and these inlines now call the
contpte functions. Originally they were exported as EXPORT_SYMBOL() for
fear of breaking out-of-tree modules. But we subsequently concluded that
EXPORT_SYMBOL_GPL() should be safe since these functions are deeply core
mm routines, and any module operating at this level is not going to be
able to survive on EXPORT_SYMBOL alone.
I only looked at __set_ptes() to get a feeling what would currently work.
__set_ptes() might already call __sync_icache_dcache() via
__sync_cache_and_tags(), that is EXPORT_SYMBOL_GPL.
[mte_sync_tags() is not exported at all, so maybe it's safe to assume
that some out-of-tree module could not make good use of set_pte_at() in
general]
Acked-by: David Hildenbrand <david@xxxxxxxxxx>
--
Cheers,
David / dhildenb
